Expansion device or slip-joint



E. L. BARNES. EXPANSION DEVICE 0R SLIP JOINT.

APPLICAHON FIL ED NOV- 9 1920. I

Patented Feb. 1,1921.

2 SHEETS-SHEET 1.

. m. W -N \N N% N .m N1 M Q W WmN N1 1 E. L. BARNES. EXPANSION DEVICE 0RSLI'P JOINT.

APPLICAIION FILED NO-V. 9,1920. 1,367,349. Patented'Feb. 1,1921.

2 SHEETS-SHEET 2- UNITED STATES- .PATENT OFFICE. V

EUGENE L. BARNES, OF BUFFALO, NEW YORK, ASSIGTVOB TO DIS'I'RTC'I.

s'rnm contain, or

YORK.

Application fllcd- November 9, 1920, Serial No. 422,080.

To all whom it concern:

Be it known that I EUGENE L. BARNns, a citizen of the United States,residing at Buffalo, in the county of Niagara and State of New York,have invented certain newand useful Improvements in Expansion Devices orSlip-Joints, of which the following is a specification, reference beinghad therein to the accompanying drawing.

This invention relates to expansion structures, also known as slipjoints, and is primarily dsigned for use in connection with steam andsimilar systems wherein provision is made for the normal tendency of theconnected portions of a pipe line to expand, contract, or creep. I

The subject-matter of the present case is an improvement on thestructure disclosedin my application Serial No. 305, 17 6, filed June20, 1919. The structure thereof includes an inner .or slidable.joint-member provided with a guiding flange at its outer extremity thathas a sliding movement within the-bore of a casing-member bolted orotherwise secured to an outer sleeve and housed by the casing'member.Secured to the outer sleeve is a packing-gland. In that instance, theslidable joint member was guided by means independent oi thepacking-gland.

in an application for United States Lettext's-Patent, filed May 12,1920, Serial No. $80,877, it have disclosed an improvement upon thestructure disclosed in my application Serial No. 305,476; and in thatcase the casing-member of the first construction is omitted and thegland is so constructed as to constitute a support for and aguidingmedium of the slidable member which forms a component of thejoint and, thus, the gland element is therein utilized to perform a duali'unction, namely, that of maintaining the packing in proper position,and, also, that of guiding the movable component of the joint.

manufacturing thereof is greatly simplified. This structure of thepresent case primarily difiers-from that of the application Serial No.380,777 in omitting the guiding flange onthe movable component of thejoint and, instead, the gland element is so formed as I Specification ofLetters Patent.

nonmn TONAWANDA, NEW YORK, a oonrona'r'xon or Nnw nirrmsron mvronoB-sLrr-aom'r.

Patented Feb. 1, 1921..

to engagethat member both inlproirimity to the gland which it holds inposition and,

also, at a spaced-apartpoint whereby that member is guidedv in itsmovement and the var ous components of the structure are mamta ned inproper operative relation so that 1n ury to the contalned packing isprevented. J

-In order that the invention, may be more readily comprehended, I havedisclosed the same in the accompan ing drawings,

which-a practical embodlment of'my inventlve-concept 1s illustrated; butit is to be understood that in thus illustrating the single embodiment,the invention is not limited thereto, since it is susceptible of a widerange of modification and variation without departing from-itsunderlying principles and salient features. 7

In these drawings:

Figure 1 is a view, partly in elevation and partly in longitudinalsection, of an eirpanemu-structure made in accordance with myvinvention; a

Fig. 2 is a view in central longitudinal section of the same;

Fig. 3 is a view in end elevation oi the structure; and

Fig. 1 is a view in vertical transverse sec" tion, on the line 4.4l,Fig. 2;.

Referring, now, to these (drawings, it will be noted that thereference-character l designates an outer or encompassing component orjoint-member to which a pipe may be secured, as by welding at 2; thoughit is to be understood that the pipe may be otherwise attached to themember. The encompassing member is, preferablyand as shown, providedwith a flange 3 and having a series of bolt-holes 4: through whichextend bolts 5.

The member 1 is formed withan internal annular recess 6 adapted toreceive packing 7. Disposed for a sliding movement within the member 1-is an inner or slidable member or component 8 which, preferably and asshown, is of such exterior diametral dimensions as to have a sliding fitwithin the borev .9 of the member 1.

The member 8 is of duplex construction and comprises two tubularportions 10 and 11, the outer portion (11) encompassing a section of theinner portion 10 and being spaced therefrom to provide an annularchamber, or space 12 for containing a cooling medium, such as air. Theportions wand 11 from imparting Thus, the life of this packing isunaffected by heat and, in consequence, seldom requires are j dined at13 so that the member 8 at that point is closed. Between the portions 10and 11, at their 0 posite ends, is disposed a series of spacers 1 ,thesebeing spaced apart to provide openmgs' for the assage of air or othercoo fluid into the ehamber 12.- B rea- S011 o the fact that the portion11 of the 'member 8 is always in direct contact with the packing 7, theair in the chamber 12 acts as an insulator to prevent the; heat of thefluid passing through the joint structure its heat to the packing.

reg lacement. r r

7 he packing 7 is maintamed wlthln the recess 6 by a gland'elenient 15comprising a body portion 16, and a packing engaging portion 17extending therefrom and o eter to be 'insertible at 18 in the recess 6.This packing-engaging portion has a sliding -fit with the member 8 andserves, in

' part, as a bearing for the member 8 This member 8, however, is furthersupported by a member-.gui from the body portion 16 of the gland element'15. This portion has its exfor the'member 8.

tremity inturned to rovide a bearing 20 he portion 19 is integral withthe body portion-16 through web or skeleton 21, the constructionbeingsuch as to provide openings 22 for the passage of air from theatmosphere into an enlarged space 23 formed within the element 15.

The bolts 5 are threaded into the body portion 1601? the gland element15 and serve as means to adjust the gland element in respect to thepacking 7. By reason of the factrthat the bolts are all accessible fromthe exterior of the structure, it does not require any dismantlingthereof to manipulate the pa'cklng7 or to replace it.

To the member 8 may be secured, as by welding'at 24, a pipe 25.

From this construction, itwill be perceived that the expansion structurecomprises, primarily, the vencompassing component 1 which is recessed at6 to receive the packing 7, and carries the bolts 5; also the glandelement; but, on :the contrary, the

gland element itself is formed with the bearing portion 20 whichencompasses and has ding portion 19 extending of the member 1, then withthebcaring 18 of the ortion 17, and then with the bearing 20 oft eportion 19. p The member 15, therefore, maintains the packing inproperplace and condition and likewise maintains the sliding member 8 inaccurate relation to the parts with which it has a sliding engagement.

'. In practical of the't pes of expansion structures herein referre to,it has been found advantageous to maintain the duplex member 8 inaccurate sliding position with respect to the other associated parts byhaving the gland element in contact with this member as near to its axisas possible.

i It will now be seen that I have devised an efi'ective type ofexpansion structure and that, in comparison with those of my othercases, I have simplified the components thereof to a material extent.

What I claim is:'

1. An expansion-structure including a plurality of members associatedfor relative movement, and a gland element adjustably secured to one ofthe members and having ofi'set bearing portions slidably engaging one ofthe members at spaced-apart unahned points, the outermost bearingportion being of smaller diameter than that of the other bearingportion.

2. An expansion-structure including a pair of members associated forrelative movement; one of the members being tubular in form; andapacking-holding element having a packing-engaging portion in slidingengagement with the tubular member and a member-guiding portion inwardlyoffset from the engaging portion and also in gliding engagement with thetubular mem- 3. An expansionstructure including a pair of membersassociated for relative movement; one of the members being tubular inform; theother member having an internal annular recess for packing; anda gland element having a packing-engaging portion in sliding engagementwith the tubular member and a member-guiding portion inwardly offsetfrom and unalined with the engaging portion and also in slidingengagement with the tubular member.

4. An expansion-structure including a pair of members associated forrelative movement; one of the members being tubular in form; the othermember having an internal annular recess for packing; and a glandelement having a packing-engaging portion in. sliding engagement withthe tubular member and adjustable against pa cking in said recess and amember-guidlng portion spaced apart and inwardly offset from theengaging portion and also in sliding engagement with the tubular member.

5. An expansion-structure including a pair of members associated .forrelative movement; one .of the members being tubular in form; the othermember having an internal annular recess for packing; and a glandelement having a packing-engaging portion in sliding engagement with thetubular member and adjustable against packing in said recess and amember-guiding portion inwardly offset, from the engaging portion andalso in sliding engagement with the tubular member; and means accessiblefrom outside of the recessed member for adjusting said gland-element in.the recess.

6. An expansion-structure including a 'pair of members associated forrelative movement; one of the members being tubular in form; the othermember having an inter.

nal annular recess for packing; and a gland element having apacking-engaging portion in sliding engagement with the tubularmemberand adjustable against packing in said recess and a member-guidingportion s aced apart from the engaging portion and a so in slidingengagement with the tubular member; and means accessible from' outsideof the recessed member for adjusting said menib 7. Anexpansion-structure including aglandelement in the recess; said elementhaving an annulus with openings in its walls to permit circulation ofair to the tubular er. i

pair of members associated for relative ternal annular. recess forpacking;- and a gland element having a packing-engaging portion insliding engagement with the tubular member and adjustable againstpacking in said recess and a member-guiding portion spaced apart fromthe engagingportlon and also in sliding engagement with the tubularmember; and means accessible from outside of the recessed member foradjusting said gland-element in the recess; said tubular member havingan air-containing space'between its walls to insulate the packing fromthe heat of fluid flowing through the structure.

8. An expansion-structure including a pair of members associated forrelative movement; one of the members'being tubular in form; the othermember having an internal annular recess for packing; and a glandelement having a packing-engaging portion in sliding on agement with thetubular member and a justable against packing in said recess and amember-guiding portion spaced apart from theengaging ing engagement witthe du lex member and sustaining the same.

culate into said air-containing space in the tubular member.

9. An expansion structure including a plurality of associated inembers,one of which has relative movement within the other, and one of whichmembers is of duplex form, comprising innerand outer portions, thelatter encompassing, but spaced apart from, the inner portion to providean annular air-space; and a packing-holding element carried by one ofthe members and provided with a packing-engaging portion and with amember-guiding portion in sliding engagement with the lnner portion ofthe duplex member. g

'10. An expansionstructure including a plurality of associated membershaving relative movement; one member constituting an air-insulatingcomponent and being of duplex construction comprising a pair of tubularportions, one encompassing, but spaced apart from, the other to providean air-space therebetween the other relatively-stationary memberencompassing a portion of the duplex member; and a gland elementadjustably carried by the stationary member and provided with apacking-engaging portion and with a memberuiding portion in slidtheinner portion of 11. n expansion structure including a pair ofassociated members adapted for 'rela tive movement; one memberconstituting an air-insulated component having a tubular portion and anannular air-containmg space between its inner and outer walls andencompassed in part by the other of the members; and 'a packing-holdingelement adjustably secured to said encompassing member and comprising apacking-engaging portion and a member-guiding portion spaced from thepackingengaging portion and having a sliding engagement with the tubularportion of the air-insulated component.

l2.- An expansionstructure including a plurality of members associatedfor relative movement; one member constituting an en member andadjustable against the packing in the recess; said element comprising apacking-engaging portion and a memberguiding portion having a slidingengagement with the tubular portion of the air-insulated component.

13. An expansion structure including a plurality of members associatedfor relative movement; one member constituting an encompassingtcomponent within which the; other member has a sliding movement andinternally recessed to receive packing; the other member constituting aninsulating component; and a combined gland and member-guiding componentcomprising a bodv portion, a packing-engaging portion extendingtherefrom into the recess in the encompassing component and having asliding engagement with the insulating component, and a member-guidingportion extending from the body portion and formed with an angulatedextremity having a sliding en gagement with the insulating component ata point thereon spaced from the point of engagement therewith of thepacking-engaglng portion.

14. An expansion-structure including a plurality of members associatedfor relative movement; one member constituting an encompassing componentwithin which the other member has a sliding movement and internallyrecessed to receive packing; the other member constituting an insulatingcomponent; and a combined gland and member-guiding component comprisinga body portion, a packing-engaging portion extending therefrom into therecess in the encompassing component and having a sliding engagementwith the insulating component, and a member-guiding portion extendingfrom the body portion and formed with an angulated extremity having asliding engagement with the insulating component at a point thereonspaced from the point of engagement therewith of the packing-engagingportion; and packing in the recess and insulated and maintainedrelatively cool from the heat of fluid flowing through the structure.

15. An expansion-structure including a plurality of members associatedfor relative movement; one member constituting an encompassing componentwithin which the other memberhas a sliding movement and internallyrecessed to receive packing; the other member constituting an insulatingcomponent and comprising a tubular device having inner and outerportions, one encompassing but spaced from the other portion to providean air-space in the device, one end thereof being closed and the otheropen for the ingress of air into the air-containing space; and acombined gland and memberguiding component comprlsing a body portion, apacking-engaging portion extending therefrom into the recess in theencompassing component and having a sliding engagement with theinsulating component, an a member-guiding portion extending from thebody portion and formed with an angulated extremity having a slidingengagement with the insulating component at a point thereon spaced fromthe point of engagement therewith of the packing-engaging portion; andpacking in the recess and insulated and maintained relativel cool fromthe heat of fluid flowing throng the structure.

16. Am expansion-structure including a plurality of members, one ofwhich has movement in relation to the other; the movable membercomprising a plurality of spaced-apart portions to form an annularair-space; and an open-sided gland-element carried by the other memberand provided with an annular gland portion adjacent one end and,adjacent its opposite end, with a member-guiding portion spaced apartfrom the gland-portion and directly engaging one portion of the movablemember while the gland portion engages the other portion of that member.

17. An expansion-structure including a plurality of members, one ofwhich has movement in relation to the other and comprises two portions,one of which encompasses the other and is spaced apart there from toform an annular air-s ace, and a gland-element secured to the ot ermember and provided at one end with an annular gland portion and, at theother side end, provided with a member-guiding portion having a slidingengagement directly with the inner portion of the slidable member whilethe gland portion has a sliding engagement with the outer portion ofthat member.

18. An expansion-structure including a slidable tubular memberattachable to piping and having a three-point bearing comprising anencompassing member also attachable to piping and bored to receive andslidably support one end of the tubular member, and a gland elementprovided with a packing-engaging portion secured to the encompasslngmember for adjustment in rethree-point bearing com using an encom-.

passing member also attac able to piping and bored to receive andslidably support one end of the tubular member, and a gland elementprovided with a packing-engaging portion secured to the'encompassingmember for adjustment in respect to packing therein and for slidablysupporting the tubular member and provided, also, with an angulatedmember-guiding portion spaced apart from the packing-engaging portionand relativel remote from the encompassing member or supporting andguiding the tubular member.

20. An expansion-structure including a plurality of members associatedfor relative movement one within the other, and an element secured toonerof the members and provided with an inturned outer extremity andhaving bearing portions slidably engaging one of the members atspaced-apart points.

21. An expansion-structure including an encompassing member, a slidingmember associated therewith for relative movement therein, and apacking-holding element adjustably secured to the encompassing memberand having an angulated bearing-portion in enga ement with the slidingmember at a point re atively remote from the encompassin member.

. 22. n expansion -structure"including a packing-supporting member, aslidingmember associated therewith for relative movement therein, and abearing element secured to one of the members and provided with outerand inner bearing portions slidably engaging the sliding member atspacedapart points, the outer bearing portion being of diametraldimensions smaller than 3 those of the inner bearin portion.

In testimony whereof afiix my signature in presence of two witnesses.

EUGENE L. BARNES. Witnesses:

HOWARD LONG, Gnome H. Wris'r.

